What number is halfway between 3/5 and 7/10

Describe the domain and range of y=2(3)^x-2+5

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?